Water-extracting device.



PATENTED SEPT. 5, 1905.

J. H. HENDRICKSON. WATER EXTRAGTING DBVIGB.

APPLICATION FILED APB. 25.1904.

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APPLICATION FILED APR. 25. 1904.

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PATENTED SEPT. 5, 1905.

J. H. HENDRIGKSON. WATER BXTRACTING DEVICE.

APPLICATION FILED APB-25.1904.

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No. 798,789. PATENTED SEPT. 5, 1905 J. H. HBNDRIGKSON.

WATER EXTRACTING DEVICE.

APPLIOATIQN FILED APB.2,1904.

4 SHEETS-SHEET 4.

UNITED STATES PATENT OFFICE.

WATER-EXTRAOTING DEVICE.

Specification of Letters Patent.

Patented Sept. 5, 1905.

Application filed April 25, 1904. Serial No. 204,903-

1'0 (all whom it may cmwcrn:

Be it known that I, J org-N H. I'IENDRICKSON, a citizen of the UnitedStates, residing at Cleveland, in the county of Ouyahoga and State ofOhio, have invented certain new and useful Improvements inater-Extracting Devices in the Manufacture of Cement; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itpertains to make and use the same.

My invention relates to the manufacture of cement, and more especiallyto that step in the process subsequent to the mixing and previous to theburning of the slurry.

My invention has for its object the continuous operation of pressing thewater or moisture from the slurry or mixturejust previous to itsdelivery to the kilns and in delivering the pressed slurry to the kilnin cakes, having the water or moisture removed to a material extenttherefrom, thus facilitating the burning process and resulting in abetter product of cement.

My invention consists, first, in the continuous process of deliveringthe slurry to presses intermittently presented to means for deliveringthe slurry in predetermined quantities, extracting the water or moisturefrom the slurry by pressure, and delivering the pressed slurry in cakesready to be burned in the kilns.

My invention consists,secondly,in the means cooperating to feed theslurry to intermittently-presenting water-extracting devices inpredetermined quantities, to extract the water or moisture, to expel thecake of slurry after the water or moisture has been extracted, and todeliver the cake of slurry to a burningkiln.

My invention also consists in the combination of parts and constructivefeatures of the same, all of which will hereinafter be fully set forthand claimed.

In the drawings, Figure I is a view in elevation, partly in section, ofa machine embodying my invention. This figure has some of the partsshown illustratively only, as they are too small in relation to theother features or parts to be shown clearly or in detail. Fig. II is atop plan view with aportion of the top removed and illustrating some ofthe presschambers with their auxiliaries and some with the auxiliariesor parts of them removed for the sake of clearness. Fig. III is a viewin detail and partly in section of one of the presses orwatcr-cxtracting devices with its cooperating auxiliaries andillustrating the same with the bottom opened and the plunger at itslowest position forcing the slurry cake from the press-chamber. Thisfigure also illustrates the feeding device and its operation and theair-forcing mechanism for loosening the cake from the bottom of thepress-plunger. Fig. 1V is a view in elevation and partly in section ofthe water-extracting press or device and its auxiliaries, illustratingthe same with the plunger elevated and the press-chamber in position orcondition to receive the wet or liquid slurry. Fig. V is a detail viewillustrating the valve-operating cams of the feedingmechanism and theirrelative position in relation to each other.

Before proceeding with a detailed description of my invention as it isillustrated in the accompanying drawings I will explain that in theusual method of cement mixing and burning marl and clay is mixed withabout from fifty to sixty percent. of water and ground to a powder andthen the mixture is stored in what is called a storage or correctiontank, and this is called slurry. From this storage or correction tankthe slurry is pumped to the burning-kiln,and with its from lifty tosixtyper cent. of water the mixture enters the kiln, and the moisture must beevaporated before drying and burningcommences. Hence this process istedious, limiting the output of the mill or factory. It is verydesirable that the water be extracted from the slurry previous to itsintroduction to the kiln for the above obvious reasons; but it has beenfound very hard, if not impossible, to handle the slurry in its liquidform and in an economical and convenient manner and attain anysubstantial results.

By my invention I have eliminated all objections to handling of theliquid slurry and handle, deliver, press, and eject the slurry inalmost, if not quite, solid cakes or lumps, and for this purpose I haveherewith appended drawings illustrating means as I think them bestadapted to carry out the process and which are as follows:

A represents a bed or base plate of the machine, which is supported inany suitable manner, either in standards or masonry, and is providedwith suitable drainage. surmounted on the bed or base A is a revolubletable B, centrally pivoted by means of a vertical spindle or shaft B.The spindle or shaft B is formed hollow, as at l), and is stationary andis also connected, by means of a tube with an air-pres- IIO sure. Theshaft B has outlets Z2 5 which are adapted to register withpipe-openingsc 0, leading to the several press-chambers and in theplungers thereof. See Figs. I and III.) The function of the air-pressureis to loosen the pressed cake from the bottom of the plunger after thepressing operation is completed and the slurrycake is forced from thepresschamber, (see Fig. III,)as will be hereinafter morefully set forth.

The table B is provided with gear-teeth, which mesh with the teeth of apinion D, in turn driven in any suitable manner so as to give to thetable B a horizontal rotary movement -in the desired direction. (Seearrow, Fig. II.)

Mounted on the table B, so as to revolve therewith, are two series ofannularly-arranged presses EE,each provided with a plunger 6, connectedto astem E The plunger 6 is suitably packed and fits the press-cylindersnugly. Centrally located in the plunger 0 is a valve 0', openingdownwardly and held to its seat by a spring. The valves 6' controlopenings e e of suitable number, leading down ward from a chamber a. Thechamber 0 is in communication with a tubular channel 6*, passing throughthe plunger-stem E said chamber communicating at stated times with pipes0 as will be hereinafter explained. (In III the communication is openand in Fig. IV it is closed.) In Fig. III the details of thepress-feeding apparatus or mechanism, and also the air-pressuremechanism, is clearly set forth, and as their details are the same inall the series of presses I will describe them referring to this view,Fig. III.

The individual press-chambers are secured in two annular rows to theupper face of the table B in any suitable manner either by bolts, asillustrated, or other convenient fastenings. The press-chambers E E aresecured to the table B over openings B and are provided with adownwardly-opening door C, which is hinged, as at C to one side at thelower part of the chamber and is locked in position by a movable latch 0located opposite to the hinge portion. The latch c is automaticallyopened and closed as the table B revolves and at predetermined times toallow the slurry cake to to be dropped or forced from the press and toclose the door to adapt the press-chambers E E to be filled and expressthe liquid from the slurry. The closing of the door C is alsoautomaticallyaccomplished through suitable cams after the slurry cakehas been discharged. The above arrangements and their operations aremore clearly set forth in Fig. II and consist of bell-crank levers (Z,having their short arms engaging the sliding latch 0 and their longerarms provided with adjustable projections 61 (Z adapted to engage,respectively, cams 6* b the former for withdrawing the latch 0 andallowing the door'C' to drop and the latter for pushing the latch 0provided with a fine-mesh screen and, if necessary, a layer of canvas orcloth to retain the solid particles and allow the liquid to flow ofi asthe slurry is pressed. (See Fig. III and Fig. IV for door construction.)A packing g may be provided at the bottom of the presschamber E, againstwhich the door C jams and forms a close joint.

The press-chamber feeding device or mechanism is composed of a hopper H,which is preferably formed at its upper end elongated,

as illustrated in Fig. II, (to the left,) and at its lower end thehopper enters the chamber I E about central-of its height. Eachpresschamber E E is supplied with a hopper H, which moves with it and isso located that at a predetermined timeviz. just after thepreviously-pressed cake has been discharged or ejected-it will comeunder a valved charger J. The charger J is formed with a chamberofsuflicient capacity to just charge the presschamber with the rightamount of slurry. The valves for operating the charging-chamber J areillustrated in Figs. III and IV. In Fig. III both valves are shownclosed just previous to the charging operation of the presschambcr andjust as they are asth'e pressed cake is being ejected. In Fig. IV theupper valve is shown open, and the lower valvej is closed just aftercharging the press-chamber and ready to receive the predetermined chargeto charge the next press chamber. The valves are operated by means ofbellcrank levers 7c 70, hich are in turn operated by spring-controlledand vertically-movable rods K K. The lower ends of the rods K and K areoperated upon by cams K and K respectively, the former, K operating therod .l i

K and the latter, K operating the rod K and through it the bell-cranklever is and valve 7". The disposing of the cams K and K are shown inFig. V, as is also their construction. The cam K is formed shorter thanthe cam K for the reason that the valve is to be opened longer to allowthe contents of the charging-chamber J to run into the press-chamber,and hence the hoppers are also elongated at their upper ends. The timein which the valve must be opened and closed is short, because the feedto chamber J is a force-feed, as the slurry is pumped through pipe Linto it from the correctiontank. Each annular row of press-chambers isprovided with a charger, and although I have shown and mentioned twoannular rows it is evident that any convenient or suitable number may beemployed, limited only by size of the machine.

The plunger e is operated through the plunger-stem FF, which operateswithin a casing E surrounding the stem at the upper part of thepress-chamber C, the stem E working vertically through said casing E. Atthe upper end the stem E is provided with a roller E, which engages anannular incline M, (see Fig. 1,) and thus as the presses revolve theplungers are gradually depressed until the slurry is caked and eject-ed,(see Fig. III and to the left of Fig. 1,) the plunger reaching thefarthest projecting end of the incline M, as at 11/, Fig. I, and as theroller E" of each stem E passes out of engagement with the farthestprojecting or cam surface in of the incline or track M the stem E andplunger I are again elevated by means of a weighted lever N, fulcrumedon a stud 11 (see left of Fig. II) and connected to a pin or stud )1,carried by the stem E and working in a slot 11 provided therefor in thecasing E (See Fig. IV.) The lever N may be slotted for connection withthe pin or stud n in order that the stem E may move vertically. It is atthis portion of the machine that the charger .I is located and operatesto charge the presschambers.

As the plunger is depressed and as it has reached its lowest extent ofmovement (see Fig. III) the stem E is in position to allow thechannel-opening w to communicate with the pipe-opening and thusair-pressure is admitted through the plunger -stem to the lower face ofthe plunger and between this lower face and the pressed cake. Thisforces the cake from the plunger and allows it to drop away when itotherwise might stick to the plunger, as it is more orless pasty. Theconstruction of the valve 6 distributes the air into a radial sheet,clearing the bottom of the plunger. A spring-pressed valve-ring l1 keepsthe air from escaping when theplunger is raised.

The base A and the upper structure on top 0 of the machine are tied orbraced together by tie-rods o r) o n, and the whole structure mustnecessarily be strong enough to bear the necessary strain of thepressingoperation. The base A is provided with annular channels P I forthe water to collect, and being inclined they may have outletsp p andsuitable pipes (not shown) for carrying off the drainage.

The operation of my machine is as follows: Referring to Fig. IV, it willbe imagined that the press has just been charged and the plunger E isstarting on its downward stroke. The mess-chamber is meanwhile t'avelinga circular direction and the cam K has engaged the rod K and opened thevalve j. The liquid slurry is forced by pump-pressure, into the chamberJ, filling it, and the valve closes,

(the rod having passed the cam K This pressing-chamber passes round itspath, and the plunger is meanwhile depressed until it reaches the pointin Fig. I to the left of said figure. At this point the bottom or door 0is released and drops, the press being over opening G in Fig. II. (Seedotted lines.) Fig. III illustrates this action and position of theparts. As the door 0 opens the pressed slurry cake is ejected from thebottom of the chamber E and air forced between the bottom of the plunger0 and the upper surface of the cake, detaching the cake from theplunger, when it drops through opening (1, Fig. II, into a suitableconveyer to be fed to the kiln. Any conveying means may be employed, andhence it is not thought necessary to illustrate one construction of thekind. After the chamber E has been emptied the door is closed by meansof cam F coming in contact with it, and the latch c is shifted with cam6'' and the valve j contacted with cam K, and the valve is opened anddischarges the contents of chamber J into the hopper II and from thenceinto chamber E, and the operation as above is repeated with eachsucceeding press-chamber and in each annular row of chambers.

\Vhat I claim is- 1. A machine for extracting water from slurry previousto burning, comprising means for containing slurry, means for measuringthe slurry intopredetermined quantities comprising a valved charger,means for operating the valves of said charger to deliver thepredetermined quantities to a water-extractor and means for dischargingthe portions from which the water has been extracted, all cooperatingsubstantially as set forth.

2. In a machine of the type set forth, the combination with a valvedchargirig-chamber, of a pressing-chain ber, means communicating betweenthe charging-chamber and pressingchamber for delivering the slurry tothe pressing-chamber, with means for automatically charging anddischarging the charging-chamber.

3. In a machine of the type set forth, the combination with a series ofmovable water-extractors, of a charger adapted to successively chargeeach water-extractor with a predetermined amount, and means comprisingvalves for recharging the charging-chainber,an d discharging it,substantially as set forth.

t. A machine of the type set forth comprising a series ofannularly-arranged presses to receive the slurry, a charging devicelocated soas to successively charge each press with the slurry, meansembodying valves for controlling the charging and discharging of thecharging-chamber, and comnmnicating means between the charger andpress-chambercooperating, substantially as setforth.

A machine for extracting water from slurry, comprisingcontinuously-movable water-extractors having hinged bottoms, means forsuccessively charging said extractors with Wet slurry in predeterminedquantities,means for automatically releasing the bottoms, and means forautomatically forcing the material from the extractors after the waterhas been extracted therefrom.

6. A machine of the type set forth, comprising successively arrangedpress chambers, and movable in relation to a charging device; a chargingdevice for successively charging the press-chambers, plungers operatingin the press-chambers, and an air-passage through each plunger todeliver air at the bottom of the plunger when .the pressing operation iscompleted.

7. In a machine of the type set forth, the combination, with a series ofsuccessively-arranged circular moving Water extractors, comprisingpress-chambers and plungers operating therein, of an annular inclinearranged to depress the plungers as the water-extractors are moved intheir circular path, and means for elevating the plungers after eachdepression thereof.

8. In a machine of the type set forth, a series of circular-movingpresses including plungers, and means for delivering compressed air tothe under surface of the plungers when the pressing operation iscompleted.

9. In a machine of the type set forth, a series of circular-movingpresses including plungers, means for delivering compressed air to theunder surface of the plungers when the pressing operation is completed,and means for shutting off the air-supply during the pressing operationof the plungers.

10. A machine of the type set forth, comprising a series ofsuccessively-arranged water extractors embodying press chambers andplungers operating therein, means for successively supplying thepress-chambers with predetermined quantities of slurry, means fordepressing the plungers to compress the slurry in the press-chambers,means for supplying air to the under surface of the plungers when thepressing operation is completed, and means for shutting off theairduring the pressing operation.

11. In a machine of the type set forth, a

water-extractor embodying a press-chamber and a plunger operatingtherein, means for supplying the chamber with slurry, a hinged bottomfor said chamber, means for automatically'opening'said bottom to permitthe discharge of compressed material from the chamber, and means forautomatically closing the bottom after the discharge of the compressedmaterial from the chamber.

12. In a machine for extracting water from slurry, a press-chamber andmeans for charging the same with slurry, in combination with a plungeroperating in the chamber and having an air-port for admitting air to theunder surface of the plunger on the completion of the pressingoperation, and means for closing said port during the pressingoperation.

13. In a machine for extracting Water from slurry, a movablepress-chamber, a plunger operating therein to compress the material, andmeans for depressing the plunger to compress the material, combined witha charger for delivering predetermined quantities of slurry to thepress-chamber, and having automatically-operated valves successivelyoperated, one to discharge the slurry from the charger to thepress-chamber and the other to permit the recharging of the charger,substantially as described.

1 1. In a machine for extracting water from slurry, a Water-extractorembodying a presschamber, and a plunger operating therein, a hingedbottom for said press-chamber, means for automatically opening saidbottom when the water-extracting operation is completed, means forautomatically forcing the material from the extractors after the waterhas been extracted therefrom, means for automatically closing thebottom, when the material has been discharged from the extractor, andmeans forautomatically supplying slurry to the extractor inpredetermined quantities.

Signed at Cleveland, in the county of Guyahoga and State of Ohio, this1th day of April,

JOHN H. HENDRICKSON.

Witnesses: v

A. L. LORD, E. B. DONNELLEY.

